1) Does being outraged over it help the cause? If not, its just empty posturing.

2) Criticise the action itself as ‘racist’ (if and when it happens) rather than offering up blanket accusations of racism.

This is the definitive word on talking about racism. HEED IT

In summary:

if someone is saying “we should call out racism when we see it and anyone who disagrees with is an apologist” – we should ask them if they’re doing it to actually help victims of racism, or just make themselves feel better.